The How of -(으)면서

To use the grammar pattern -(으)면서 you need to take the verb stem of an action verb. Then take a look whether it ends in a vowel or not. If it ends in a vowel or ㄹ you attach -면서 to it. However, if the verb stem ends in a consonant you attach -으면서. However, keep in mind that some irregular verbs behave differently when confronted with a verb ending starting with 으:

동안 VS -(으)면서

You use this pattern, contrary to 동안, when one person, meaning one subject, performs simultaneously. Therefore you cannot use this to describe what is happening around the subject while it is doing something.

Polar BearAuthor

After meeting Panda, Polar Bear became enthralled with the Korean Language. Today he spends his days learning Korean, writing notes on what he has learned and sharing it with everyone else. He hopes he can spread his love for Korean and help others learn it.